BAOJIE BJ-UV55 User Manual

Installation of Transceiver
Select a safe and convenient site in your vehicle so as to reduce possible damage to your
passenger or yourself during vehicle movement. You may install the transceiver blow the
dashboard in front of the front passenger seats so that your knees and legs will not collide the
transceiver in case of emergency brake. It’s best to select a well ventilated location which is
shielded from direct sunlight.
1. Use the supplied self-tapping screws (4X) and flat washers (4X) to install the mounting bracket
in the vehicle as shown in Fig. 1 and Fig. 2.
Fig. 1 Fig.2 Fig. 3
2. Fix the transceiver, and then insert and tighten the supplied hexagonal screws (4X) as shown in
Fig. 3.
z Make sure all screws are tightened to avoid loosening of the bracket or the transceiver in
vibration of vehicle.
z Use the 3 screw grooves at the side rear side of each bracket to install the main body at a
proper inclined angle as shown in Fig., 4, 5 and 6.
Fig. 4 Fig. 5 Fig. 6
Power Cable Connection
 Operation of transceiver
Be sure to use 12V vehicle batteries with sufficient electricity. If the electricity is insufficient,
the display screen may darken or the transmission output power may greatly drop during the
transmission. Do not connect the transceiver to 24V batteries.
Note: If you use the transceiver when the vehicle-use batteries are not sufficiently charged
or the engine is off, battery discharge may lead to insufficient electricity quantity, making it
difficult to start the vehicle. Therefore, try to avoid using the transceiver in such situation.
1. Use the DC power cable supplied with the transceiver to connect the transceiver with the
vehicle battery terminal in a shortest route.
z It is suggested not to use a cigar lighter outlet as much as possible as some of them
may lead to great voltage drop.
z The whole power cable must be wrapped up to isolate it from heat and moisture
and from the engine ignition system/connection wiring.
2. When the power cable is installed in place, wind the fuse holder with heat-resistant
adhesive tape to protect it against moisture. It’s better to use heat-resistant adhesive tape to
wrap the whole power cable.
3. To prevent short-circuit, disconnect the other connection wirings at the negative (-) battery
terminal before connecting the transceiver.
4. Please confirm the correct polarity of connections before attaching the power cable to the
battery terminal. Connect the red wire to the positive (+) terminal of battery and the black to
the negative (-).
Vehicle bod
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Mounting
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racket
Cone screw
Washe
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BAOJIE BJ-UV55 Specifications

General

Brand	BAOJIE
Model	BJ-UV55
Category	Transceiver
Language	English

Summary

Transceiver Installation and Power Cable Connection

Mounting Bracket Installation

Install the mounting bracket using supplied self-tapping screws and flat washers.

Fixing the Transceiver

Secure the transceiver using supplied hexagonal screws after mounting bracket is fixed.

Angled Transceiver Mounting

Mount the transceiver body at an inclined angle using the bracket's screw grooves.

Connecting to Vehicle Battery

Connect the DC power cable to the vehicle battery terminal via the shortest route.

Power Cable Routing and Protection

Wrap the power cable to protect it from heat, moisture, and ignition system.

Fuse Holder and Cable Protection

Protect the fuse holder and the entire power cable with heat-resistant adhesive tape.

Preventing Short-Circuits

Disconnect negative battery terminal connections before connecting transceiver to prevent short-circuits.

Confirming Polarity

Ensure correct polarity by connecting red wire to positive and black wire to negative battery terminals.

Power Cable Length and Fuse Holder

Use the full power cable length and do not remove the fuse holder.

Reconnect Battery Terminals

Reconnect all wiring to the negative battery terminal after connecting the transceiver.

Connect Cable to Transceiver

Plug the DC power cable into the transceiver, ensuring the locking tab clicks.

Fixed Radio Station Operation

External Power Supply Requirement

Requires an independent 13.8V DC power supply with at least 12A continuous capacity.

Connection Precautions

Connect all cables before powering the DC supply and ensure correct polarity.

Connecting DC Power Supply

Connect the DC power supply cable to the transceiver, ensuring the locking tab clicks.

Fuse and Antenna Connection

Fuse Type and Rating

Use only specified fuse types and rated values to prevent transceiver damage.

Antenna System Requirements

Install a highly efficient antenna with 50 Ohm impedance and low loss coaxial feeder.

Operating and Safety Precautions

Impedance Matching

Use 50 Ohm impedance to maintain performance and prevent interference or damage.

Transmitting Without Antenna

Prohibited; transmitting without antenna or matched load will damage the transceiver.

Lightning Arrester Requirement

Fixed radio stations must have a lightning arrester to prevent fire or electric shock damage.